Hall, Clare H. (Clare Hamilton), b. 1880 · New York, D. Van Nostrand company · leaf 71
62 THE CHEMISTRY OF PAINTS the weight of the oil determined, in which case car- bon-disulphide free from sulphur is best used as a solvent and the vapor condensed during evaporation. The washed sample may now be taken for analysis, after being thoroughly mixed and pulverized. Determination oj… … consists of a copper retort A, of about 200 c.c. capacity, detachable at D to admit of filling and subsequent cleaning. G is a small opening for admission of coal gas. (This may be dispensed with, but when used it should be freed from mois- ture by passing through CaClj.) The copper tube leading…
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